#social
{position:absolute;
    left:0;
    top:140px;
    width:60px;
    height:320px;
    z-index:999
}

@media (max-width: 750px)

{

#social
{
    visibility: hidden;

}



}

#social .social_item{display:inline-block}
#social .social_item:hover
{background-repeat:no-repeat;background-position:0 top}
#social .social_item a{width:40px;height:40px;display:block;text-decoration:none;background-color:#ddd;color:#000;font-size:16px;text-align:center;margin:2px 0;line-height:40px}
#social .social_item a:hover{background-repeat:no-repeat;background-position:0 top;color:#000}